It just takes practice. Check out Leah Day's website and just do the ones you think you can do. You'll be surprised that it's easier than you think it is. I've practiced on Downy quilts. I have a hard time just practicing on scraps and I don't want to wreck my quilts. The Downy kids won't care, and I've never ruined one. It gives me a chance to practice while making something useful. I've done different designs in every square.